Lenovo BIOS dump for board 17807-3M, an 8.00 MB binary. The five-digit plus dash pattern is used by Wistron, an ODM that builds boards for Lenovo, Dell and others. The image suits a 64 Mbit (8 MB) SPI flash and would not fit a smaller chip. Write it with a programmer such as a CH341A only after reading and saving the original contents, which may hold serial and system information. Check that the board number printed on the PCB is 17807-3M before flashing.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @dtechbios. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →